For alkaline phosphatase using the dual Helmholtz coil/spectrometer system, the mean (mean) value of the slopes fitted for AF-C for each substrate concentration is given.

The mean value for each substrate concentration used was calculated from 3 separate experiments (n = 3), the slope for each experiment AF-C was fitted using a straight line of best fit with R2 values >0.98 in all cases. The standard deviation (sd) is also given. Similar (less extensive) data is also given for the alkaline phosphatase using the Biostim system (see results).